Figured I would post my quickest time slips. Truck is 2017 Silverado Z71 Double Cab 4x4 5.3, 6 speed, 3.42 gears, 265/65/18R wheels. Mods K&N drop in filter, Spintech 6000 muffler, and Klug Performance tune running e85. All of the passes I launched the truck in 4wd and left it in 4wd for the whole pass, manually shifted the truck at 6200rpm in each gear. Also all the passes were full street weight with around a 1/4 tank of fuel 5500lbs. with me in it. The 13.96, and 14.01 passes the temp was 45 degrees, DA of 125, tail wind of 8mph. The rest of the passes it was 57-60 degrees, DA 625-1075, cross wind of 10-20mph. I think everything just lined up perfect for the 13.96 pass. Regardless even with the low 14 second passes I think that is quite an accomplishment from the stock 15.20 time the truck ran.